Nut-lock.



No. 840,249. PATENTED JAN. 1, 1907.

D. W. PIATTON. NUT LOCK.

APPLIOATIO FILED JULYlQ, 190B.

And/Nera UNITED sTATEsPATENT lo-Frjron. l i DeWDW-Peaforiloiiitil A Specification of'Letters yaterit.` if 'i i @prima had July 19, iiaoe. serai No. 326.849.

T (o/Z whom t may concern: v

. Be it known that I, DAVID W. PATTON, a

citizen of the United States, and a resident of Moberly, in the county of Randolph and State of Missouri, have invented a new and Improved Nut-Lock, of which the following is a full, clear, and exact description.

This invention relates to an improvement in nut-locks, the object of the invention being-to provide a simple and very easily oper ated device inexpensive to manufacture and very effectual in the performance of its funcsection on thesli'ne 3 3 of Fig. 2, a portion of the bolt being shown in elevation. Fig. 4 is a perspective view of the locking means, and Fig. 5 is a erspective view ofthe nut.

In the 'crm of the invention illustrated I employ an ordinary bolt 1, having a portion of the threaded end thereof cut away on op.-

4posite sides to form two parallel substantially iiat surfaces 2. In connection with this bolt I employ the ordinary form of nut 3, havin the usual threaded passage 4, adapted to t the threaded end of the bolt. In the outer surfacel of the nut 3 two parallel grooves 5 are cut, each being substantially circular in cross-section and flushwith the surface of the nut. These grooves intersect the main threaded passage of the nut on opposite sides, and the distance between the two grooves lis substantially the same as' the thickness of the flat end portion of the bolt. In conjunction with the bolt and nut above described I employ a U -shaped staple 6, preferably formed from. a piece of wire and having notches 7 cut in the outer sides thereof adjacent the ends.

In the use of my invention the nut is screwed on the bolt to thedistance desired end portion ofthe bolt between the two arms thereof andV preventinn its rotation, as clearly indicated in Figs.'2 and 3. The two arms of the locking member preferably diverge slightly, and upon their insertion in the grooves to the required distance the notches engage the edges of the nut .and prevent the accidental displacement of the locking member. The locking member being preferably of wire, its outer ends may be bent out of alinement after its insertion, thus serving as an additional means for holding the same in place. i

It is evident that the flattened portions 2 2 of the bolt may extend any desired distance required, according to the use to which the bolt may be applied, and the locking member may be applied to the inner rather than the outer surface of the nut, or holes may be drilled intermediate the two surfaces instead of providing the grooves illustrated in the drawings.'

Other minor changes may be made without departing from the spirit of the invention.

Having thus described my invention, what I claim as'new, and desire to secure by Letters Patent, is

' 1. In combination, a bolt having portions of its end cut away on opposite sides to form substanti ally flat parallel surfaces, a nut having the usual threaded opening therethrough and two parallel grooves in one face thereof intersecting the threaded opening, and va staple formed of a piece of wire and having the ends thereof bent parallel and inserted in said groove and holding the iiattened end of the bolt from rotation, said arms having notches adjacent their ends adapted to engage with the nut and hold the arms from TOO the arrns of the staple being adapted to enter :the groves of the nut and contact with the In testimoxy whereof jI have signed my opposite sides of the flattened end ofthe belt 'name to this specication in the presence of v to prevent the bolt or nut from turning in retwo subscribing Witnesses.

spect to the other, andthe sta. le being hel'd l DAVID W. PATTON. 5 in place bythe engagement of t e notches on Witnesses:

the stapleairrs with the side of the nut at y' EMIL F. (urU'rIzIm-NSTg the ends of the grooves. WILLARD P. COVE. 

